Sign hanger



FIG. 1 is a perspective view of the sign hanger;

FIG. 2 is a front elevational view of the sign hanger, the rear elevational view being a mirror image thereof;

FIG. 3 is a side elevational view of the sign hanger in a closed position, the opposite elevational view being a mirror image thereof; and,

FIG. 4 is a side elevational view of the sign hanger in an open position, the opposite elevational view being a mirror image thereof. 

The ornamental design for a sign hanger, as shown and described. 